Worth 100 points and it says 50 because it is split in half but tell me what is your favorite movie

What two categories of toxins were present in the air at dish, texas as a result of the gas pipelines that pass through the area

Pl what kind of reaction is this? nahco3 + h2o → co2 + naoh + h2o -composition -decomposition -single replacement -double replacement im leaning more toward single replacement. if im wrong can you explain whyy?

506g of hi produce how many grams of i2?